package com.demo.aspect;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;

//用注解方式定义切面、切入点和通知(完整版本)
@Aspect
public class AnnoAspect3 {
    //定义切入点
    @Pointcut("execution( * com.demo.service.UserService.update(..))")
    public void pointcut() {
    }

    //前置通知
    @Before("pointcut()")
    public void before(JoinPoint joinPoint) {
        System.out.print("这是前置通知！");
        System.out.print("目标类是：" + joinPoint.getTarget());
        System.out.println(",被织入增强处理的目标方法为：" +
                joinPoint.getSignature().getName());
    }

    //返回通知
    @AfterReturning("pointcut()")
    public void afterReturning(JoinPoint joinPoint) {
        System.out.print("这是返回通知!");
        System.out.println("被织入增强处理的目标方法为：" +
                joinPoint.getSignature().getName());
    }

    //环绕通知
    @Around("pointcut()")
    public Object around(ProceedingJoinPoint point) throws Throwable {
        System.out.println("这是环绕通知之前的部分！");
        //调用目标方法
        Object object = point.proceed();
        System.out.println("这是环绕通知之后的部分！");
        return object;
    }

    //异常通知
    @AfterThrowing(value = "pointcut()", throwing = "ex")
    public void afterException(Exception ex) {
        System.out.println("异常通知:" + ex.getMessage());
    }

    //后置通知
    @After("pointcut()")
    public void after() {
        System.out.println("这是后置通知！");
    }
}